A nurse is collecting data from an 18-month-old toddler who is postoperative. Which of the following rating scales should the nurse use to identify the toddler's pain level?

Choice A reason: The color tool is not a pain assessment tool; it is used to assess oxygen saturation levels. Choice B reason: The FACES scale is commonly used for children who are 3 years of age and older, but it may not be suitable for an 18-month-old toddler who may have limited ability to express pain through facial expressions. Choice C reason: The visual analog scale is typically used for older children and adults. It may not be effective for assessing pain in an 18-month-old toddler. Choice D reason: The FLACC scale (Face, Legs, Activity, Cry, Consolability) is a validated pain assessment tool for young children, including toddlers. It evaluates specific behaviors related to pain, making it suitable for this age group.